Home / 998,127.12-1,377,449.40-545,447.28

Finding the Fourth Proportional to 998,127.12, 1,377,449.40 and 545,447.28

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Solution

The fourth proportional to 998,127.12, 1,377,449.40 and 545,447.28 is: 752,735.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    998,127.12 : 1,377,449.40 = 545,447.28 : x
  2. Step 2: Convert to fraction form
    998,127.12/1,377,449.40 = 545,447.28/x
  3. Step 3: Cross multiply
    998,127.12x = 1,377,449.40 × 545,447.28
  4. Step 4: Simplify right side
    998,127.12x = 751,326,028,567.63
  5. Step 5: Solve for x
    x = 751,326,028,567.63/998,127.12
  6. Step 6: Final answer
    x = 752,735.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.